Molecular structures of cyano(methyl)silane and cyanodi(methyl)silane in the gas phase, determined by electron diffraction, and vibrational spectra of cyano(methyl)silane
作者:Stephen Cradock、Christopher M. Huntley、David W.H. Rankin
DOI:10.1016/0022-2860(88)85020-8
日期:1988.8
Abstract The molecular structures of monomethylsilyl cyanide and dimethylsilyl cyanide in the gas phase have been determined by electron diffraction. The molecules have bond lengths (pm) and angles (degrees): MeSiH 2 CN: r (SiCN) 184.7(9), r (SiCH) 186.6(9), r (SiH) 147.9(9), r (CH) 108.5(7), r (CN) 116.7(3), ∠HCH 105.4(20), ∠CSiC(N) 109.5(15); Me 2 SiHCN: r (SiCN) 186.7(9), r (SiCH 3 ) 185.7(5)
摘要 利用电子衍射法测定了气相中单甲基氰化甲硅烷和二甲基氰化甲硅烷的分子结构。分子具有键长 (pm) 和角度 (度): MeSiH 2 CN: r (SiCN) 184.7(9), r (SiCH) 186.6(9), r (SiH) 147.9(9), r (CH) 108.5(7), r (CN) 116.7(3), ∠HCH 105.4(20), ∠CSiC(N) 109.5(15); Me 2 SiHCN:r (SiCN) 186.7(9), r (SiCH 3 ) 185.7(5), r (SiH) 151 固定, r (CH) 110.0(7), r (CN) 116.4(7) ), ∠HCH 110.2(7), ∠CSiC(N) 111.4(15), ∠CSiC 103.2(20), ∠SiCN 170(4)。在每种情况下,氰化物碳的线性都有明显的偏差,但这些被认为是收缩效应。建议对